Chain for timber in combination with alpha tightening device and key



June 9, 1931. R A NY EN 1,809,420

CHAIN FOR-TIMBER IN COMBINATION WITH A TIGHTENIN' DEVICE AND KEY Filed Aug. 51, 1929 I fiwww a Patented June 9, 1931 maize UNITED sures PATENT om e KARL RICHARD ALBERT NYLE'N, or soLLnFTEA, swnnnn CI-IAIN FOR TIMBER IN COMBINATION WITH TIGHTENING DEVICE AND KEY Application filed August 31, 1929, Serial No. 389,854, and in Norway March 2, 1929.

This invention relates to a connectionchain for round timber logs in'combination with a tightening device and closing key. The chain, endless or single, is laid around two following log ends of two timber logs to'be connected together, and'serves simultaneously as connection chain between the timber logs. L

According to the invention, the chain is provided with a tightening devicewith closing key, which device consists of two spe cially shaped members engaging the one the other, and secured in their tightened position by means'of' a key or the like. Consequently, the parts of the chain which are laid around the timber logs can, with the aid of the tightening'device, be so tightened around said logs, that the necessity of using special fixationchains, hooks to be hammered into the wood, and the like, is avoided. Evidently the chain can quite as well be used as fixation chain for a number of timber logs, for instance when said logs are transported on trucks- Inthis latter. case the part of the chain in question is pulled together and tightened by means of the tightening device to be fixed in, its position by means of the key, whereby the part of the chain which is not'used remains free.

One form of execution-of the object of the present invention is shown, by way of example, on the accompanying drawings,

wherein i v a Fig'. 1 is a front elevation showing the parts of an endless chain tightened and fixed :in positiofn jaround a fround timber log by means ofthe' tightening devficefand key; I.

i Fig. Q is a plan viev'v'of the tightening device, -the cl sin} key being inserted. I

Fig. 3 shows "thechain serving simultaneously as fixation chain and as connection chain between two following timber logs, both ends of the 'chain being each tightened by one tightening device and said two devices are held in their tightened positions by the inserted keys. 7

Each partrof the endless chain, serving as fixation chain, is laid around the ends of two following timber logs, whereafter the parts of the chain around the timber logs "When the chain has are tightened by meanso'f the closing device and fixed, in position, whereby the parts of the chain serving as connectlon chain between the two timber logs pass through said tightening device. The tightening device consists of two specially shaped members 2 and 3, with upwardly curved end parts 5, 6 and 7 9. The

centre part .4 of member 2 and the centre part 8 of member 3 are larger than the upwardly curved end parts 5, 6 and 7, 9, so

as to allow the free passage of the chain therethrough. I

In the form of execution shown in the V drawings, especially Fig. 2, member 2e11- gages withits upwardly curved end 6 the upwardly curved, larger, end part 7 of member 3. Part 6 is so formed as to easily pass through the ring-shaped end 7 of member 3,

and has a hole in said part through which a key 11 may be stuck. Key 11 is provided with a lever 12,.pivotally fixed to said key, and provided-further,at itsffre'e' end with a nose engaging, when pressed downwards, the

upwardly curved part 7 of member 3, so that said tightening device is securely held in its closed position. Keyll is somewhat enlarged at the point engaging between timber log and chain, to enable a better hold.

Care, however, has to be taken, that the links engaging parts 5' and 9 of members 2 and 3, must be links in upstanding position. One can useendless chains or single chains of every length as the tightening device can vice (Fig.8); Whenthe chain hasyto serve for the transport oftimber logs, for instance on trucks or. the, like, merely one tightening device 1i'1e tybeused, thechainbeing laid around all timber logs'on the truck.

' n auxiiary link 1311s provided with the closing device,'which link will be used when exceptionall long chains are used, this to enable a su cient tightening of chain 1 independently of the circumference of the timber 10 Said auxiliary link 13 is partly enlar e to allow the free passage of the chain, an further has a narrower part into which only a link of the chain in upstanding position can be inserted.

When using an endless chain for instance as fixation and connection chain between two following timber logs (Fig. 3), care has to be taken that the chain parts connecting said two logs be of approximately equal lengths.

The operation is as follows:

After a chain 1 has been laid around say two following timber logs 10 (Fig. 3), the part 6 of the member 4 is brought in engagement with the ring-shaped part 7 of member 3. Owing to the peculiar shape of said members they will, when engaged the one -into the other (Fig. 2) tighten the chain 1 laid around the timber log 10, whereby the part 5 of member 2 and part 9 of member 3 engage an upstanding link of chain 1. Key 11 is gripped, passed through the opening of the upwardly curved part 6 of member 2 in such manner that its somewhat enlarged point comes to be situated between the wood and the upstanding link of chain 1 engaging the upwardly curved part 9 of member 3. The key is forced in between wood and upstanding link so far-that the nose of the pivotable lever 12 can be pressed onto the upwardly curved part 7 of member 3 to firmly hold the tightening device in its position.

It will be preferable, however, to use a pivoted lever 12 with several incisions or noses so that it may be adjusted in any position; the form of pivoted lever shown on the drawings being also merely shown by way of example.

What I do claim as my invention and de sire to secure by Letters Patent is 1. In combination with a chain laid around round timber logs, a member with upwardly curved narrow part engaging an upstanding link of said chain, a central larger part of said member allowing the free passage of said chain, an upwardly curved ring-shaped part of said member, a second member with upwardly curved narrow part engaging an upstanding link of said chain, a central larger part of said second member allowing the free passage of said chain, an upwardly curved part of said second mem ber adapted to be inserted through the upwardly curved ring-shaped part of the first member, a hole in the upwardly curved part of the second member, a'key adapted to be passed through said hole in the upwardly curved part of said second member.

2. In combination with a chain laid around round timber logs, a member with upwardly curved narrow part engaging an upstanding link of said chain, a central larger part of said member allowing the free passage of said chain, an upwardly curved ring-shaped part of said member, a second member with upwardly curved narrow part engaging an upstanding link of said chain, a central larger part of said second member allowing the free passage of said chain, an upwardly curved part of said second member adapted to be inserted through the upwardly curved ring-shaped part of the first member, a hole in the upwardly curved part of said second member, a key adapted to be passed through said hole in the upwardly curved part of said second member, an enlarged point of said key pressed between the wood of the timber log and the upstanding link of the chain engaging the upwardly curved narrow part of the first member, a lever pivotally fixed to said key, a nose at the free end of said pivotable lever adapted to engage the upwardly curved ring-shaped part of the first member.

3. In combination with a chain laid around round timber logs, a member with upwardly curved narrow part engaging an upstanding link of said chain, a central larger part of said member allowing the free passage of said chain, an upwardly curved ring-shaped part of said member, a second member with upwardly curved narrow part engaging an upstanding link of said chain, a central larger part of said second member a-llowing'the free passage of said chain, an upwardly curved part of said second 'member adapted to be inserted through the upwardly curved ring-shaped part of the first member, a hole in the upwardly curved part of said second member, a key adapted to be passed through said hole in the upwardly curved part of said second member, an enlarged point of said key pressed between the wood of the timber log and the upstanding link of the chain engaging the upwardly curved narrow part of the first member, a lever pivotally fixed to said key, a nose at the free end of said pivot lever adapted to engage the upwardly curved ring-shaped part of the first member, and an auxiliary link on said second mentioned member, an enlarged part of said auxiliary link allowing the free passage of the chain, a narrow part of said auxiliary link for engaging an upstanding link of the chain when exceptionally thick timber logs come in question.

In testimony whereof I aflix my signature.

KARL RICHARD ALBERT NYLEN. 

